Hello, Until now, only Grub EFI bootloader was supported in (gnu system image). Installing Grub EFI is as simple as copying a binary (created with grub-mkstandalone) in a dedicated partition. Now, for MBR based booting, one needs to run grub-install that does require root permissions. To overcome this issue, I used a hack inspired from OpenWrt and Buildroot. As grub-install is in fact a wrapper around grub-mkimage and grub-bios-setup, it is possible, with some plumbing and using those two tools, to install Grub on a raw disk-image, without root permissions. Thanks, Mathieu Mathieu Othacehe (8): bootloader: Add 'disk-image-installer'. bootloader: grub: Do not run grub-install when creating a disk-image. bootloader: grub: Use inheritance to define grub-minimal-bootloader. image: Add bootloader installation support. system: image: Correct genimage configuration file indentation. image: Use grub-efi to install the EFI bootloader. system: image: Fix image-with-os. image: Do not use VM to create disk-images. gnu/bootloader.scm | 5 +- gnu/bootloader/grub.scm | 80 ++++++++++++++++++++++------ gnu/build/image.scm | 9 +++- gnu/ci.scm | 20 +++---- gnu/system/image.scm | 113 ++++++++++++++++++---------------------- gnu/tests/install.scm | 8 +-- guix/scripts/system.scm | 16 +++--- guix/utils.scm | 5 ++ 8 files changed, 155 insertions(+), 101 deletions(-) -- 2.26.2